One of the things I do quite often with my Lutron setup is use a Lutron keypad button to control non-Lutron devices. This requires three Indigo triggers per controlled device: (1) toggle the power to the device on each keypad button press, (2) set the keypad LED on when the device turns on, and (3) turn the keypad LED off when the device turns off. At least, I haven't found any way to do it with less, allowing for control of the device by other means.
So I'm considering adding a custom device type to the Lutron plugin that will accomplish all that automatically. You'll specify the keypad button and the Indigo dimmer or switch device to be controlled. Then it'll just work.
How are other people doing this now? Would this be useful?
I'm also considering whether the inverse is useful. For instance, a Lutron device (in my case, a switch for a ceiling fan) being controlled by Insteon RemoteLincs. I actually prefer the Insteon RemoteLincs to the Lutron Picos. The Picos have bright/dim buttons, but at best have four usable buttons. With the RemoteLincs I have 8 buttons to play with. The Picos are cheaper, though.